db57d230

2.2.10. Replacement of a saddle of the valve

PERFORMANCE ORDER
1. Any plug-in saddle of the valve which is worn out to a limit needs to be replaced at the room temperature with cutting of a wall, as shown in the figure A.
2. After removal of an old saddle of the valve it is necessary to chisel a nest under the increased valve saddle size.
3. Heat a head of cylinders to temperature of 250 °C and press a new saddle of the valve of the repair size. At a press fitting the saddle of the valve has to have room temperature. After installation of a new saddle of the valve it is necessary to execute grinding in of the valve.

Description
Increase in the size, mm
Size tag
Height of a saddle, mm
Diameter of a nest in a head of cylinders, mm
Saddle of the inlet valve
0,3
30
5,1-5,3
29,80-29,821
0,6
60
5,4-5,6
30,10-30,121
Saddle of the final valve
0,3
30
5,9-6,1
27,30-27,321
0,6
60
6,2-6,4
27,60-27,621